As well as growing industrial hemp for processing research, hempseed was also processed, using the cold-press method.
Cold pressing retains the essential fatty acids, proteins and flavour, where heat pressing breaks down the complex molecules. Cold pressed oil is "live" in this sense and most valuable in terms of human consumption and well-being.
Older stocks of oil, or sub-quality oil is more suitable for varnishes, paints and of course lamp oil, biodiesel and soap.
